Tool-holder.



No. 667,735. Patented Feb. I2, |901.

' C PEASE TOUL HOLDER.

(Application led Mar. 24,-1900,)

(No Model.)

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CIIARLES PEASE, OF LYNN, MASSACHUSETTS.

TOOL-HQLDER.

SPECIFICATION forming part of Letters Patent No. 667,735, dated February 12, 1901.

Application iiled March Z4, 1900. Serial No. 10.082. (No model.)

To t/Z w'trmo it may concern:

Be it known that LCHARLES PEAsE,of Lynn, in the county ot' Essex and Commonwealth of Massachusetts, have invented certain Improvements in Tool-Holders for Machinists Use, of which the following, read in connection with the accompanying drawings, is a speciiication.

In the drawings, Figure l is a plan, and Fig. 2`is an elevation, of a tool-holder e1nbodying this invention. Fig. 3 is an elevation of a section on line 3. Fig. 4 is a plan view of parts to be described hereinafter.

In this invention the bolt A comprises a section provided with conical or beveled face- Walls 2 and ascreW-threaded section 4. It has a transverse opening 6 and a slot 8 extending longitudinally thereof through said opening G and said conical or beveled section 2. The stock B has an opening e, which opening e comprises a section 10, adapted for passage therethrough of the said section 4 of said bolt A, and also a section provided with conical or beveled interior face-walls l2, said section l2 being of slightly smaller diameter than the corresponding diameter of said conical or beveled section 2 of said bolt. The nut 14, having screw-threaded engagement with said bolt A and bearing on the said stock B, may be operated forl moving the bolt A longitudinally through said opening in said stock B. It will be understood, ofcourse, that a turning' of said nut 14 in one direction operates the longitudinal movement of bolt A, which forces the beveled faces 2 on said bolt A against the beveled faces l2 of said stock l5, whereby the said bolt A is forcibly vclamped against the tool h in said hole e,

whereupon the bolt A becomes rmly seated against turning. Reversely turning the nut 14 operates to reversely move the boltA longitudinally, and consequently releases the tool 7L from the grip oi' said bolt A, whereupon the bolt A may be turned about for shifting and adjusting the angle ofthe tool h. The tool 7i may now be also adjusted longi tudinally or removed and introduced at will.

signed for holding a tool of round wire, and y consequently the said central opening therein is of circular contour. Other shapes and sizes may obviously be employed. Said bushings are adapted circuinferentially to t in hole 6 of said bolt A and are cut or slotted at one 6o side to permit being clam ped against the tool. The stock B has its shaft adapted for fitting into the tool-post of an ordinary lathe, planer, or other machine-tool, as desired.

I claim- 1. The combination with a stock having a transverse opening therein, said opening cylindrical at one end and tapering at the other, of a bolt fitted to this opening, the bolt split at the tapered end and provided with a transverse opening and threaded at the opposite end, and a tool clamped in this opening and a nut on the threaded end for tightening the tapered portion of the bolt in the tapered end of the opening in the stock.

2. The combination with a stock having a tapering opening therein,0fabolt fitted to this tapering opening, said bolt split from one end well into the portion in the tapering opening and provided with an opening 6 in the portion which is always outside of the opening in the stock, said opening 6 adapted to receive a tool, and means for forcing the bolt endwise in the opening` in the stock whereby to create lateral pressure upon the bolt at opposite points and between the tool and the inner end of the slit in the bolt.

Signed by ine at Lynn, Massachusetts, this 20th day of March, 1900.

CHARLES PEASE. 

